Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Cost of revenue
Costs and expenses with related parties	$ 0	$ 0	$ 0	$ 405
Sales and marketing
Costs and expenses with related parties	$ 6,253	$ 4,507	$ 10,171	$ 7,843